Disconnector means in self-charging firearms



H. E. EKLUND 2,390,061

DISCONNECTOR MEANS IN SELF-CHARGING FIREARMS Filed may 24, 1943 2 Sheets-Sheet 1 jhnnnunnnn Dec. 4, 1945. H. E. EKLUND 2,390,051

DISCONNECTOR MEANS IN SELF-CHARGING FIREARMS Filed May 24, 1943 2 Sheets-Sheet 2 H A/S ER/K EKL u/vp .g-lfiof lley Patented Dec. 4, 1945 UNITED smrss DISCONNECTOR- MEANS 1N SELF- CHARGING FIREARMS Hans Erik Eklund', Malmo, Sweden, assig'nor to Aktiebolaget J. C. Ljungma'n, Malmo', Sweden, a corporation of Sweden TENT OFFICE Application: May 24, 1943, Serial No. 488,218 In Sweden March 9,1942

trigger, in spite of having been made inoperative through the interruption of the connection with the sear, is still movable to perform a firing movement. If it is desired to prevent even the latter movement, as long as the breech block does not take its firing; position, it is possible to cause tne disconnector device to be actuated by a spring keeping th same raised out of touch with the member provided. between the trigger connector member being arranged to prevent the and the sear when the breech block takes its firtrigger, every time it has been pulled, from loc'king position, so that acatch or the lik arranged ing, in the position of release, a sear released by for this purpose on the disconnector device will the trigger and locking the hammer in cocked be located outside the path of movement of said condition. member at firing while being depressed into this Similar devices are previously known,.it is true, path at recharging so as to form a stoppin but hitherto they were of complicated construcmeans for saidmember, as So s he o ti0n,. bulky and expensive in manufacture, nector device is rendered operative; Thus the Moreover, each disconnector member'would form advantage is obtained that the trigger on having a self-containedunitentirely independent of the ret d i to its initial position s Stopped y other. the catch when. another firing is tried, as long The present invention has for its object to proas the'breech block does not take its firing posivide a single disconnector device having the tion. same effect as that of the twoabove-mentioned The invention isillustrated in a few embodidisconnector devices, while being simpler, less ments in the accompanyi drawings, wherein bulky and cheaper to manufacture than the- Fig. 1 shows a vertical section of a portion or alatter. firearm provided with an arrangement accord- Accordingly, the invention is principally dist the invention 2 ShoWS a plahviow tinguished by the feature that the disconnector f Fig. 1: with someparts omitted.- Fi 318 amembers consist of a single disconnector device vertical section on line III]1I of Fig. and actuated by the part which is movable for re- Fig. 4 is a vertical section similar to Fi l but charging, said disconnector device being for this Showing e po s of the p t in iJhe rearpurpose arranged to actuate a member arranged ward recoiled position of the breech block. In the between the trigger and the sear, in a manner figures, I designates the action casing of the firesuch that said member interrupts the connection arm and 2, 2' the inner and outer P01110115 of between the sear and the trigger and remains the breech block. The inner portion 2 or the in such position until the breech blo k ha b e bolt is mounted slidably in the direction of length returned into its firing position. of the weapon in the outer portion 2' or the slide, By then making the disconnector device in the d the rear d of bolt 2 s SWingable p and form of an arm pivotally arranged in the casing down in the slide 2- e S iding and swingi of the arm, said arm bearing with a portion movement of the bolt 2 in the slide 2 is rather thereof on the member arranged between the s a a d e bolt 2 follows e de ur trigger and the sear, the disconnector device is its recip o movements in t e ection o rendered very simple, and by causing this arm length of the Weapon. The slid 2 is thrown to be actuated by the part effective for rechargreaTWaIdS y actuation of the p d gases and ing, during all or the majority of the positions after that movement it is thrown forwards in of the latter at the movement of the breech blc-ck known manner by actuation of the springs from th firing position, t advantage is When the bolt 2 and the slide 2 occupy their tained that the sear will be released immedifront positions, the bolt 2 is held depressed toately at the commencement of recharging for ward the action cas ng l by an inner inclined taking a position adapted for the locking of the lateral projection (not shown) on the slide 2', hammer, and that the connection between the Which lateral oje t on cooperates With an intrigger and the sear remains interrupted, until clined lateral projection on the bolt 2 in a manthe breech block has again taken its firing posiner such that the rear end of the bolt 2 will be tion upon completed recharging. depressed in front of an edge 25 (see Fig. 3) in According to the arrangements described, the the casing I. The bolt 2 is now blocked by slide 2' and the edge 25 during firing. slide 2' is thrown rearwards through the action of the powder gases and lifts then at first by mean of a second inner inclined lateral projection on the slide, parallel with the first one; the rear end'of said bolt 2 upwards over th edge 25 and takes the bolt 2 along with itself backwards, whereafter the spring 28 brings the slide 2 as well as the bolt 2 forwards again and blocking of the bolt 2 occurs in the front position by the aid of the slide 2' as just described, which slide, with its first-mentioned inner inclined lateral projection thereby depresses the rear end of the bolt 2 in front of the edg 25. During this movement of the breech block (the slide and the bolt) the weapon has in known manner been reloaded with a new cartridge.

The hammer 3 is actuated by the trigger 4 through the sear 5 and the trigger link 6. The hammer 3 is pivotally arranged about a shaft 1 in the casing I and isactuated by the mainspring 8. The trigger 4 i pivotally arranged about a shaft 9 in the casing I and is pivotally connected to the trigger link through a pin l0.

The spring H returns the trigger into its initial position every time it has been pulled, and presses the trigger link upwardly against a stop surface of the action casing into position, when given a substantially longitudinal displacement by the trigger 4, to engage the sear. The sear 5-is pivoted about the. shaft I! which is mounted in the casing l, and is kept pressed by a spring I3 towards its position adapted for the locking of the hammer. The trigger link actuates a beak 15 on the sear by means of an abutment l4. l6 designates the firing pin which is here mounted in the bolt 2.

The disconnector device is constituted by an arm I! which is pivotally mounted in the casing I on the shaft 18. The arm I! is provided with an angular arm 2!] which is actuated directly by the slide 2. when the latter is moved out of its firing position. Through a spring 2! the arm I! will be pressed upwardly, so that, when the breech block takes the firing position, said arm will be located outside the path of movement of the trigger link 6. As soon as the breech block is moved from the firing position, the arm I! After firing the V will be depressed against the action of the spring 2|, as shown in Fig. 4, and remains in this position, until the breech block has again assumed the firing position. The arm U will thus depress the trigger link 6 and interrupt the connection between the trigger and the sear. The sear is released and the connection is reestablished only after the breech block has returned into the firing position and the spring 2! has raised the arm I1.

Provided on the arm I! is a catch 23 or the like which, when the arm I1 is in depressed position and the trigger has returned into its initial position, forms a latch for the trigger, inasmuch as the trigger link i stopped by said catch which has been brought through the depression into the path of movement of the trigger link. By this means a further disconnector is obtained against firing, a long as the breech block has not taken its firing position.

The arm I! need not be a single one but may be double-armed, for example, and the place of interruption between the trigger and the sear need not have the location shown, but may be, for instance, between the trigger and the trigger link, in which case the trigger linkshould be pivotally connected with the sear and bear on the trigger and be adapted to be actuated by the latter through a catch.

What I claim is:

In a firearm, a reciprocating breech block, a'

hammer, a sear adapted to latch'said hammer in cocked position, a trigger, means pivotally mounting said trigger in said firearm, a trigger link pivotally connected to said trigger and movable substantially longitudinally by said trigger to actuate said sear to release said hammer, a pivotally mounted arm actuated by said breech block when displaced from firing position to depress said arm to engage said trigger link and mov the same out of position to actuate said sear and a projection on said arm moved upon depression of said arm into position to block movement of said trigger link by the trigger whereby the trigger cannot be pulled unless the breech block is in closed position.

HANS ERIK EKLUND. 

